To access the diagnostics option from the Control Panel, click Properties; select the Diagnostics
tab; select the SM56 Modem from the list; and then click More Info. If the driver is properly
installed, a dialog box appears, with responses to the ATI commands as shown in the example
below. Refer to the AT Commands section in the on-line User's Guide for an explanation of ATI
commands.
Verifying SM56 Hardware Operation
To verify correct SM56 modem card hardware operation (up to the isolation transformer), you can
use the following loop back test procedure.
1. Important: Remove the telephone line connector from the modem card.
2. Select Start.
3. Select Programs-->Accessories-->HyperTerminal.
4. Double click the Hypertrm.exe icon.
5. Optionally, select a connection name and icon.
6. In the Connect Using window, select Motorola SM56 modem.
7. Enter a number in the Phone Number box.
8. Select Dial.
9. Select Cancel.
10. Enter AT <cr>.
The response OK should appear.
11. Enter ATS46 = 23 <cr>.
12. Enter AT&T1 <cr> . Wait a few seconds.
13. Type some letters at the keyboard. If the hardware is functioning correctly, the letters you type
appear on the HyperTerminal display.
8
Changing the Operating System
Windows 98 Upgrade Error Message
If the SM56 modem is installed on a Windows 95 PC, and then the system is upgraded to Windows
98, the following error message appears when Windows 98 starts:
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